I have stage III software, TB and airbox. I got them all at once. I was pretty disappointed when I got the car back because I couldn't tell any difference. I had the car dyno'd and it only put out 191hp
If I had to do it again. I would of saved the 2k+ I spent on it for FI
The airbox is just as quiet as the stock one. So if your looking for intake sound the Dinan ain't it.
It uses the stock base and replaces the top cover with a much bigger one. There is a snorkel that goes into the drivers side air duct for cold air.
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers